Quote Originally Posted by JLMCDANIEL View Post
I would try swapping the relays to see if the problem moves with the relay or stays with the vlave. You may have a sticking valve.

THanks. I am going to give that a try. The only problem is all the other zones have new pumps on them that are real quite, and hard to tell when they are running or not. Luckily the pump with the problem is old and loud, which is what made me notice it in the first place.

I'll figure it out. Thanks for the help.